WTB: Super Takumar 55mm f1.8

So, I finally got a couple of Pentax Spotmatic bodies and now I need a lens. I'm going to be carrying this camera with me everywhere I go for a year so I'm opting for the slightly smaller and lighter 55 1.8 instead of a 50 1.4.

Anyone willing to sell one of these? I'd love to find a Super Multi Coated, pre-rubberized focusing ring version, but I'll take the older Super Takumar if the price and condition are right.